VULNERABILITY INTELLIGENCE
CVE-2016-8858
CVSS score7.5 HIGH
EPSS probability29.46%
CISA KEVNot currently listed
Published2016-12-09
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Description
The kex_input_kexinit function in kex.c in OpenSSH 6.x and 7.x through 7.3 allows remote attackers to cause a denial of service (memory consumption) by sending many duplicate KEXINIT requests. NOTE: a third party reports that "OpenSSH upstream does not consider this as a security issue."
Weakness classification
- CWE-400: Uncontrolled Resource Consumption
Primary references
- cve@mitre.org — Issue Tracking, Vendor Advisory
- cve@mitre.org — Issue Tracking, Vendor Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Mailing List, Third Party Advisory
- cve@mitre.org — Third Party Advisory, VDB Entry
- cve@mitre.org — Third Party Advisory, VDB Entry
- cve@mitre.org — Issue Tracking
- cve@mitre.org
- cve@mitre.org — Patch, Vendor Advisory
- cve@mitre.org — Issue Tracking, Patch, Third Party Advisory
- cve@mitre.org — Third Party Advisory
- cve@mitre.org — Third Party Advisory